Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = 0.32x + 4.29
B. y = 0.32x + 2.57
C. y = 0.30x + 4.29
D. y = 0.30x + 2.57
Answer: D
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Rotate the coordinate axes to change the given equation into an equation which has no cross product (xy) term. Identify the graph of the equation as a hyperbola, ellipse, parabola, a straight line, or parallel lines.4x2 - 12xy + 20y2 - 18x + 13y - 24= 0
A. -2u2 + 22v2 - 12.965u + 18.025v - 24 = 0; Hyperbola B. 22v2 - 12.965u + 18.025v - 24 = 0; Parabola C. 2u2 + 22v2 - 12.965u + 18.025v - 24 = 0; Ellipse D. 4u2 + 18v2 - 12.965u + 18.025v - 24 = 0; Ellipse
Analyze the situation and explain how you would make a decision.You want a new car but plan to use it for only 2 years. The cost of leasing is $2,000 down and $300 per month. The cost of buying is $20,000, and you can expect to sell it in two years for approximately $12,000. Which is the better option?
What will be an ideal response?
Find the derivative.s = t3 cos t - 14t sin t - 14 cos t
A. 
= - 3t2 sin t - 14 cos t + 14 sin t
B. 
= - t3 sin t + 3t2 cos t - 14t cos t
C. 
= - t3 sin t + 3t2 cos t - 14t cos t - 28 sin t
D. 
= t3 sin t - 3t2 cos t + 14t cos t
Find the critical point(s) of the function. Then use the second derivative test to classify the nature of each point, if possible. Finally, determine the relative extrema of the function.
?
?
A. 
; saddle point: 
B. 
; relative maximum value: 
C. 
; relative minimum value: 
D. there are no critical points